Tacking-machine



(No Model.) 3 SheetsSheet 1.

E. WOODWARD.

PACKING MACHINE.

No. 246,437. Patented Aug. 30,1881.

r 3 Sheets-Sheet 2.

(No Model.) E. WOODWARD. TAGKING MACHINE.

No. 246,437. Patented Aug. 30,1881.

WITNEEIEEIE INVENTEJ (No Model.)

\A/ITNESSES 3 Sheets-Sheet 3.

E. WOODWARD. TAGKING MACHINE.

Patented Aug. 30, 1,881.

Ink/ENTE UNITED STATES PATENT OFFICE.

ERASTUS WOODWARD, OF BOSTON, ASSIGNOR TO GEORGE W. COPELAND, OF MADDEN,MASSACHUSETTS.

' I'ACKING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 246,437, dated August30, 1881.

Application filed July 23, 1881. (No model.)

To all whom it may concern:

Be it known that I, ERAs'rUs WOODWARD, of Boston, in the county ofSuffolk and State of Massachusetts, a citizen of theUnited States,

have invented a certain new and useful Improvement in Tacking-Machines,of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification in explaining its nature, in which Figure 1 is a sideelevation of my improved machine at the right hand of the nozzle. Fig. 2is a side elevation of the machine at the lefthand side of the front.Fig. 3 is a detail View,

(5 hereinafter referred to. Fig. 4 is a vertical section of the throatand adjacent parts, hereinafter more especially described.

This invention relates to a power tackingmachine and means for startingit and then stopping it automatically, whereby it is made impossible todrive more than one tack at a time.

This invention is especially desirable for use in the process of lastingthe uppers of boots and shoes, where it is very necessary to drive atack very quickly and yet not drive more than one at a time.

I herein describe my invention as being operated by means of the Workheld by the op- 0 erator, or by ajack which is moved by the operator,although, of course, I do not confine myself to this especial manner ofoperation, as the machine may be started by hand or by foot, or in anyother desirable way.

In the drawings, A represents the throat of the machine, and a the endof the nozzle. B is the driver-rod, and b the driver. They arereciprocated, by means of a crank, eccentric, lever movement, or in anyother desirable way, from a main shaft, and in the drawings I haverepresented the cam C.

It will be unnecessary for the purposes of this invention to furtherdescribe the operation of the driving mechanism or to describe that ofthe feeding mechanism, it being sufficient to state that the machine isorganized to use the Copeland tackstrip, so called, or thattack-strip inwhich the heads are supported by strip of flexible material, and fromwhich the tacks are driven; and for further information concerning theconstruction of the feeding mechanism, feedway, driving mechanism, andthroat of the machine, 1 refer to the varions patents granted MatthiasBrock, George W. Copeland, and myself, and to the pending application ofthe said Matthias Brock.

The main shaft D is, of course, provided with the necessary cams orother instrumentalities for imparting suitablemovements to the driverand feeding mechanism, and it is further sup plied with the spider d andthe driven pulley d. This driven pulley is loose upon the shaft, and isadapted to be moved to and from the spider by mechanism consisting ofthe lever d pivoted at (1 secured to the pulley by means of a yoke, orin any other desired way, and having the recess d formed therein in anysuitable manner, the spring (1 the lever (1 pivoted at d to anotherlever, d, which is pivoted at d, and is reciprocated by means of thecamgroove 61 in the edge of the cam-wheel or disk 01 upon the mainshaft, the upper end of said lever 61 having a cam-pin which projectsinto the cam-groove. The end d of thelever (Z is shaped substantially asshown in Fig. 2, and it acts, in conjunction with the recess (1* and theside d ofthe leverd as alatch in holding the lever LP, and consequentlythe driven pulley, against the stress of the spring d ,and from contactwith the spider. Upon the downward movement of the end d of this lever,however, the latch is tripped and the spring 11 draws the pulley incontact with the spider, and of course the machine is set in motion. Tooperate this lever at so that the latch may be tripped, and alsoreturned to its original position to be again tripped, depends upon twofeatures, first, the horizontal movement of the lever, and, second, thevertical movementof the end or latch (1 This last-named movement isprovided, in this instance, by means of the bell-crank lever d, which ispivoted at (Z to the sliding plate d, the end at of the lever restingupon the top of this bell-crank lever c1 Of course, upon the lifting ofthe bell-crank lever the end 61" of the lever d is raised and its otherend depressed.

I have herein described the bell-crank lever as being attached to asliding plate, (1 which is adapted to be lifted by means of the foot d",which is adjustably attached to the lower end of the sliding plate, andwhich is located in relation to the nozzle (1 of the machinesubstantially as shown in Fig. 4. Upon presenting the work to be tackedto the action of the machine it, of course, first comes in contact withthe end of the foot, and before the machine can be operated the foot islifted, so that the work shall come in contact with the end of thenozzle. This lifting of the foot causes the bell-crank lever to belifted, thereby tripping the latch (1 and permitting the driven pulleyto come in contact with the spider. It is necessary, however, when thismethod of operating the latch is used, to provide means whereby thelever (1 maybe moved to a position to again engage with the catch beforethe driving of another tack, and for this purpose I employ the cam (Zthe spring (1 and construct the end (1" of the lever and the bell-cranklever d, so that the lever may be moved horizontally, and when movedsufficiently engage with the catch. The movements given by the cam andthe spring are easily understood; but the connection between the end ofthe bell-crank lever and the end d" of the connecting-lever is not soplain. I will therefore describe it more minutely. The end of the leverd is bent inwardly in a horizontal direction at a right angle therewith,and consequently the end slides off the top of the bell-crank lever atcertain times and falls beyond it, or, to state more definitely, whenthe cam d throws it back horizontally, to enable the latch to engagewith the catch. The cam then moves the lever forward again, consequentlymoving the lever (1 and causing it to disengage the driven pulley fromthe spider, and in so doing the end d" will come in contact with theside of the upper end of thebellcrank lever, unless the work has beenwithdrawn from the nozzle, and permits the sliding plate to fall.Therefore the bellcrank lever must be arranged to yield horizontally inthe direction of said lever (1 and this is acco|n plishcd by pivoting itat 61, as described. Upon removing the work from the nozzle the slidingplate and its foot then fall, and the end of the bell-crank lever isthen brought to its original position under the end of the lever (1 bymeans of the spring (1 which is attached to the end (1 of the bell-cranklever and stationary projection (P of the frame. This spring not onlycauses the bell-crank 1e- \er to be brought into an upright position,but it also acts to force downwardly or return to their originalposition the sliding plate and the foot (1 A stop, prevents the bellhandor foot power, as well as by presenting the work to the nozzle; and itis as obvious that the machine would be started and stopped in themanner desired, if it were provided with a movement in relation to thework, instead of the work amovement in relation to it.

It is also obvious that the cam d can be so shaped that two or moretacks can be driven without automatically stopping the machine; but, ofcourse, the number of tacks that can be driven is necessarily limited,and after the driving of the last one of the limited series the machinewould automatically stop.

The advantages of this invention are manifest.

Having thus fully described my invention, 1 claim and desire to secureby Letters Patent of the United States 1. In a machine for drivingfastenings, the combination of the spider, the loose driven pulley, andthe foot or projection (1 adapted to be moved in presenting the work tothe nozzle, as described, and intermediate connecting mechanism, wherebyupon the movement of said foot the machine is set in operation, allsubstantially as and for the purposes described.

2. The combination, in a machine for driving fastenings, of a spider anda driven pul' ley with the foot or projection (1 and mechanismconnecting the foot with the spider or pulley, whereby upon the movementof the foot the machine is setin operation, and then is stoppedautomatically after driving one or a given number offastenings, allsubstantially as and for the purposes described.

3. In a machine for driving fastenings, the combination of the lever (1connected with a loose driven pulley and adapted to move it upon themain shaft, as specified, in relation to a spider, the cam (1 the leverd", and the connecting-lever (1 and its spring, all substantially as andfor the purposes described.

In a machine for driving fastenings, the combination of the lever (1adapted to move a loose driven pulley in relation to a spider, asspecified, the lever d having a horizontal movement, and the bellcranklever d, having a- "ertical movement, and pivoted as described, allsubstantially as and for the purposes set forth:

5. In amachine for driving i'astenings, the combination of the spider,the loose driven pulley, the levers d d d, cam 61", the bell-crank leverthe sliding plate (1 foot (1 and the springs (Z d, and (1 to operatesubstantially as described.

ERASTUS VVOOD\VARD.

\Vitnesses:

F. F. RAYMOND, 2d, \V. O. Foes.

